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Year 11 - Maths

Compound measures for density

Compound measures

Unit Summary

In this unit, pupils explore the multiplicative relationship between different compound meaures and units such as speed, rates of pay, density and pressure.

Lesson Summary

You will learn to use compound measures for density.

Key Notes

  • Density can be calculated by dividing the mass by the volume of the solid.
  • The units for mass and volume determine the units for density.
  • By rearranging the formula, you can calculate either mass or volume.

Vocabulary To Learn

  • Density: The density of a substance is measured as the substance's mass per unit of volume.
  • Mass: The mass of a substance is a measure of the quantity of matter in the substance.

Common Mistakes To Avoid

  • Giving a density answer in the wrong units.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

Density can be calculated by dividing the mass by the volume of the solid. The units for mass and volume determine the units for density.

2. Use this key word in a maths sentence and explain it clearly. 'Density'

The density of a substance is measured as the substance's mass per unit of volume. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Giving a density answer in the wrong units. Correction: Read the question carefully and check the units of the mass and the volume. It may be necessary to convert between metric units.

More Lessons In This Unit

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